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Voltage - Dual Triode (similar high frequency) ·Triode-Triode

30L1

VHF cascode dual triode, co-designated PCC84, intended for television and radio tuner front ends where its two triodes operate together as a low-noise high-frequency cascode amplifier.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B9A
Base pins
9
Nominal heater
7 V / 300 mA

Description

Printed co-designation for the PCC84 VHF cascode dual triode.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
7 V
Nominal heater current
300 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
4000 Ω
Transconductance
0.006 S
Amplification factor
24
Max plate voltage
250 V
Max plate dissipation
2 W
Max cathode current
18 mA

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
4000 Ω
Transconductance
0.006 S
Amplification factor
24
Max plate voltage
250 V
Max plate dissipation
2 W
Max cathode current
18 mA

Second identical physical triode section; added to align rows with SectionCount.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater voltage

    7 V

    Published nominal value

  • Heater current

    300 mA

    Published nominal value

  • Transconductance

    6000 µS

    Published operating characteristic

Other

  • Maximum plate dissipation

    2 W

    Published maximum rating